Portola Hills Weather Forecast

    • 51
    • 69

    Increasing Clouds

    • 50
    • 62

    Mostly Cloudy

    • 49
    • 61

    Slight Chance Rain

    • 47
    • 63

    Partly Sunny

    • 49
    • 67

    Mostly Sunny

    • 53
    • 72

    Mostly Sunny

    • 55
    • 78

    Sunny

Today 25 May Orange County Inland

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs around 70 towards the coast to 71 to 74 farther inland. Areas of Winds southwest to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 25 May Orange County Inland

Partly cloudy this Evening, then cloudy with patchy drizzle overnight. Lows 52 to 58. Areas of Winds southwest 10 Mph this evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Portola Hills Temperature Statistics

May Temperature

Corona Airport (13 miles)

  • Lowest 6 May, 2026

    44.1 °F

  • Average May

    65.6 °F

  • Highest 19 May, 2026

    91 °F

Climate (2021–Present)

Corona Airport (13 miles)

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  • Average Low 2021–2026

    52.3 °F

  • Average 2021–2026

    65.1 °F

  • Average High 2021–2026

    78.4 °F
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